Stripping machine



Oct. 23, 1951 E. 1.. TAYLOR 2,572,537

STRIPPING MACHINE Filed Feb. 1, 1949 3 Sheets-Sheet 1 awe/WM Edward L. Tq y/or CZXXorn g Oct. 23, .1951 E. L. TAYLOR 2,572,537

STRIPPING MACHINE Filed Feb. 1, 1949 v s Sheet s-Sheet 2- CZf-forng E. L. TAYLOR STRIPPING MACHINE Oct. 23, 1951 3 Sheets-Sheet 3 Filed Feb. 1, 1949 gwuem/bo'a fozwccrcz Tag/O) Patented Oct. 23, 1951 UNITED STATES PATENT OFFICE STRIPPING MACHINE Edward L. Taylor, Baltimore, Md.

Application February 1, 1949, Serial No. 73,980

I The present invention relates to a machine for stripping waste material from scored blanks cut from sheets of fibrous materials such as paper, cardboard, cellophane and like materials.

Under the present manufacturing methods, the complete blanks are usually scored, together with any additional openings or cut-away portions, from a standard sheet. For example, in a large number of cases these blanks are so designed as to form containers when folded, and frequently carry windows or other cut-out portions. Their openings are cut or scored in the same manner as the blank itself and in most instances are more difficult to remove from the blank than the blank itself from the sheet. In the past, for the most part, they have been removed by hand, using a small mallet. This is a slow and expensive process and while attempts have been made to solve this problem, there appears to be no machine at present which will perform this task in an efficient and satisfactory manner, and it is with this need in mind that the present apparatus has been developed.

. One of the principal objects'of the invention is to provide a simple and practical machine which may be readily adapted to a number of stripping operations. 7

Another object of the invention is to provide a machine of this type which is so constructed that a large number of blanks may be stripped in one operation.

A further object of this invention is to provide a stripping machine in which the stripping elements may be readily removed and replaced.

Still another object of this invention is to provide simple and effective stripping elements.

A still further object of this invention is to provide a combination die and guiding element for the blanks for facilitating changes from one form of blank to another.

While several objects and advantages of the invention have been pointed out, other objects and advantages will become apparent as the nature of the apparatus is more fully disclosed consisting in the novel construction, combination and arrangement of parts shown in the accompanying drawing and detail description forming apart of this specification and in which:

Figure 1 is a side elevation showing the im- 2 Claims. (01. 93-36) Figure 7 is a front end view of the modified form of guide shown in Figure 6.

In the embodiment of the invention'the machine includes generally a frame, a bed, a fluid operated piston and means for carrying out the stripping operation.

The machine'is particularly adapted for stripping waste material from formed blanks which have been scored in a previous operation. The machine includes a frame l0 and a horizontal bed l2. At one side of the frame there is a piston supporting bracket l4. This bracket may be part of the frame I0, or it may be separate and welded or bolted to the frame as shown by the bolts 16. On the bottom of the frame there are provided casters I8 in order that the machine may be portable and moved to various locations where it is most advantageous to carry on the operation.

Supported upon the frame is a fluid compressor 20 which is preferably operated by an electric motor and a storage tank 22. The fluid is fed from the tank to .a valve 24 bythe pipe 25 and is directed into one or the other of the pipes 26 and 23 by operating the foot pedal 30.

Secured to the bracket l4 by the bolts 3! and 32 is a cylinder 34 which is mounted perpendicular to the bed I2. Within the cylinder is a fluid operated piston to which is connected a piston connecting rod 36. Connected to the upper end of the cylinder34 is the fluid feed pipe 28 and connected to the opposite end of the cylinder is the fluid feed pipe 26. Connected to piston rod 36 is a coupling 38 which is adapted to receive the shank 40 of a stripping tool 42. Surrounding the coupling 38 is a rotatable collar 44 held in place by afixed collar 46. The collar 44 is secured to the piston rod 36 by the set-screw 48. Fixed to the collar 44 is a rod 50 which is adapted to operate within a slotted guide member 52 for guiding the stripping tool along a predetermined path during its operation. The slotted guide member 52 is secured to the bracket l4 by the bolts 53 and 54.

The cylinder 34 is adjustable vertically of the support I 4 by moving the securing bolts 3| and 32 along the slots in the bracket as indicated at l4 in Figure 2.

The die is formed in a die plate, which also may act as the bottom surface of the blank guiding member, however theblank guide and die plate may be formed separately if desirable. In the present illustration the die plate is shown as forming a part of the blank guide member and in most cases this is the most practical way of constructing the guide and die.

In Figures 1, 3 and 5 is illustrated a stripper for cutting out portions of a folding box. The die 62 is first formed in a die plate 63 about which is built side walls 64 and B5 and a top member tially the same configuration as the scored lines of the blanks carried by the member and adapted to pass slightly inwardly from and along the opposite side of the scored lines, a stack guide having: three vertical walls arranged in U-formation on the bed for positioning the scored lines of the stack along lines substantially equidistant from the edges of the die and the stripping tool and means for controlling the operation of the member.

2. In a stripping machine as defined in claim 1, a strip at the upper end of the guide for limiting the number of blanks to be inserted in the guide at any one time;

EDWARD L. TAYLOR.

I (3 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 672,552 Harrington Apr.-23, 1901 908,381 Bennett Dec.'29, 1908 1,064,390 Spillman June 10, 1913 1,266,230 Doseh e May 14, 1918 2,467,546 Afidefson Apl. 19, 1949 FOREIGN PATENTS Nurnber Country Date 251,873 Germany Oct. 10, 1912 295,088 Germany Aug. 7, 1915 

